1,Cast steel floating ball valve
Applicable standards:
Design: API 608, ANSI B16.34
Face To Face: API 6D, ASME B16.10
Flange end: ANSI B16.5, ASME B16.47
Fire safe: API 607
Testing and inspection: API598, API6D
2,Cast steel floating ball valve
Size: 1/2"-8"
Pressure: 150LB-300Llb
Body material: WCB, CF8M, CF8, GR4A, LCB, WC6, WC9, LCC, CF3, CF3M, LF2, LF3, A351 CN7M
Operate: Manual, gear box, electric, neumatic, hydraulic atuators
END: RF, BW
3,Design description
Double block and bleed design(DBB)
Double stem sealing. The ball can maintain pressure sealing of pipeline when it is closed or fully opened.
Shorter upper sleeve reducces bearing load and operation torue
Limit device ensures the accurate opening and closing position of the valve
The vall and stem are separated so as to reduce stem load. The stem adopts anti-blow-out design.
The sealing surface is inserted into te metal seat by polymer or plastic
The metalbacked self-lubricating PTFE bearing and PTFE thrust washers
Reduce the opening torque and prolong the service life of the valve. Stem leakage can be prevented through the emergency grease fitting.
Nickel and phosphor treatment to the parts can enhance the anticorrosive performance.
The fireproof design of metal wound gasket compased of stainless steel and graphite can prevent external leakage.
Anti-static design
Floating Type
Full bore/Reduced bore
Bolted cover/welded cover
Turn 90 degree opening or close
Detachable seat PTFE/RPTFE
END: RF, BW, SW
Applicable temperature: -196-540
Supply Air: 1Bar to 8Bar.
4,Floating ball valve design feature:
Live loaded gland flang
Live loading is designed to provide gland load retention, compensating for expected in-service consolidation of packing. A set of belleville spring washers are used on each gland stud to help exert a continuous compressive force on the gland follower flange and therefore reduce fugitive emissions from the stem packing. ARITA standard belleville-spring washers are protected by a weatherproof cap to keep them free from environmental contamination, resulting in a long stable life.
|
Type |
Desing And Manufacture |
Face to face /End to end |
Flange Dimension |
Pressure and Temperature |
lnspection and test |
|
Split flange ball valve |
BS5351 API6D |
ASME B16.10 |
ASME B16.5 |
ASME B16.34 |
API598 |
|
Fixed flange valve |
API6D |
Pressure Test
|
Nominal Pressure |
Shell Test |
Water Seal Test |
Air Seal Test |
|
MPa |
Lbf/in2 |
MPa |
Lbf/in2 |
MPa |
Lbf/in2 |
|
150 |
3.1 |
450 |
2.2 |
315 |
0.5-0.7 |
60-100 |
|
300 |
7.8 |
1125 |
5.6 |
815 |
|
600 |
15.3 |
2225 |
11.2 |
1630 |
|
900 |
23.1 |
3350 |
16.8 |
2440 |
|
1500 |
|
EVK FITTING GROUP Co., Ltd (China) is a leading group, engaged in manufacturing valve, pipe fitting and flange, affilicating Qingdao EVK Industrial Co., Ltd, Yantai EVK Valve Manufacturing Co., Ltd, Hebei EVK Pipe Fitting Co., Ltd and Tianjin EVK Flange Fabrication Co., Ltd. EVK Group has more than 2000 staffs and covers around 150000 square meters totally.
Main production includes:
Valve: Cast iron/Ductile iron/Cast steel/Forged steel Valve( DIN3352 Resilient seated F4/F5 Gate valve, DIN3352 F4/F5 metal seated Gate valve, BS5163/BS5150/AWWA C509 Gate valve, API600 Gate valve, Wafer/Lug/Double flange butterfly valve, DIN/MSS Globe valve, Wafer/swing check valve, Y-strainer, JIS marine valve)
Pipe fitting: Carbon steel butt welding pipe fitting(Elbow, Straight and reducing tee, concentric and eccentric reducer, cap), Forged steel pipe fitting(Elbow, Tee, Reducer), Malleable iron pipe fitting.
Flange: Carbon steel and stainless steel forged flange(Flat flange, welding neck flange, slip on flange, blind flange).
Autoparts: Brake shoes, Brake pads, Brake discs, Brake drums.
We exported to more than 25 countries in the world, our main customers have CRANE, WALWORTH, OARI, etc. Our company was awarded with ISO9001 certificate and CE for our valve, pipe fitting and flange products.
Our blief is "Do friend first, Do business second", we welcome all friends from all over the world to do business together!
